2 Underline the correct form. a That may / must be John's calculator but I'm not sure. b She can / could be Italian because of her accent. c There's still no answer so they must / can't be out for the evening. d You never know, it can / could be sunny tomorrow. e That information can / might be correct but I'm going to check on the Internet f The Loch Ness monster may I can't exist. It's impossible. g I can't / might go to the football match but I don't know yet. h This must could be the right answer - I'm certain. i It can / might be difficult to get a job without a good education. j He's been working on the book 14 hours a day for a month. He could / must be k He can't may be from Austria. He doesn't speak German.